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Asynchronous processing JS: React

Working with asynchronous code in React is not particularly remarkable compared to what was previously discussed in the ”Asynchronous Programming", course, but it doesn't hurt to run through it again.

class Loader extends React.Component {
  constructor(props) {
    this.state = { url: null };

  handleClick = async () => {
    const res = await axios.get('/images/random');
    this.setState({ url: });

  render() {
    const { url } = this.state;
    return (
        <button onClick={this.handleClick}>Load Random Image</button>
        {url && <img src={url} />}

As you can see above, the handler can easily be made asynchronous, and everything else is as normal.

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